{"id":9928,"date":"2025-02-03T12:01:33","date_gmt":"2025-02-03T11:01:33","guid":{"rendered":"https:\/\/albergueesplaibarcelona.com\/?p=9928"},"modified":"2026-01-20T17:44:53","modified_gmt":"2026-01-20T16:44:53","slug":"sistema-dunar","status":"publish","type":"post","link":"https:\/\/albergueesplaibarcelona.com\/ca\/blog-ca\/espais-naturals\/sistema-dunar\/","title":{"rendered":"Qu\u00e8 \u00e9s el sistema dunar i per qu\u00e8 \u00e9s important?"},"content":{"rendered":"<p>[et_pb_section fb_built=&#8221;1&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_row _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p><strong>Has vingut algun cop a visitar les platges m\u00e9s properes del<a href=\"https:\/\/ca.wikipedia.org\/wiki\/Delta_del_Llobregat\"> Delta del Llobregat<\/a> i de l&#8217;<a href=\"https:\/\/albergueesplaibarcelona.com\/ca\/\">Alberg Centre Esplai<\/a><\/strong>, al sud de Barcelona? S\u00ed, s\u00ed! Parlem de les platges del <a href=\"https:\/\/ca.wikipedia.org\/wiki\/El_Prat_de_Llobregat\">Prat de Llobregat<\/a>,<a href=\"https:\/\/ca.wikipedia.org\/wiki\/Viladecans\"> Viladecans<\/a>, <a href=\"https:\/\/ca.wikipedia.org\/wiki\/Gav%C3%A0_Mar\">Gav\u00e0 Mar<\/a> i <a href=\"https:\/\/ca.wikipedia.org\/wiki\/Castelldefels\">Castelldefels<\/a>! Si les has visitat alguna vegada,<strong> t&#8217;haur\u00e0s fixat en un element diferencial que a vegades no entenem quina import\u00e0ncia t\u00e9: el sistema dunar<\/strong>.<\/p>\n<p>El sistema dunar es basa en acumulacions de sorra fixada per l&#8217;acci\u00f3 de la vegetaci\u00f3 just al darrera de les platges, <strong>un ecosistema molt caracter\u00edstic de la costa catalana, per\u00f2 molt fr\u00e0gil i sensible a l&#8217;acci\u00f3 humana.<\/strong> La pres\u00e8ncia de milions de banyistes i visitants de les platges que les trepitgen i malmeten, l&#8217;acumulaci\u00f3 de residus, la neteja de la platja amb maquin\u00e0ria i la urbanitzaci\u00f3 de la primera l\u00ednia de costa les van fer desapar\u00e8ixer gaireb\u00e9 per complert, posant en greu perill les esp\u00e8cies que hi viuen.<\/p>\n<p>Per aix\u00f2 <strong>els sistemes dunars estan protegits a tot Catalunya<\/strong> i gaudeixen d&#8217;una especial atenci\u00f3 i molts esfor\u00e7os per part de l&#8217;<a href=\"https:\/\/www.amb.cat\/s\/home.html\">\u00c0rea Metropolitana de Barcelona<\/a> (AMB) <strong>i els municipis costaners<\/strong>, que busquen <strong>recuperar i mantenir el bon estat ecol\u00f2gic de les dunes. <\/strong>Per aix\u00f2 veur\u00e0s que en moltes zones les dunes estan senyalitzades o tancades amb baranes per evitar que les persones i els gossos hi entrin i aix\u00ed aconseguir recuperar-les preservar-les al m\u00e0xim. <strong>Sobretot, si vas amb el teu gos, porta&#8217;l lligat, no permetis que entri a les dunes i recull els seus excrements!<br \/><\/strong><\/p>\n<p><strong>A les platges del Sud de Barcelona:<\/strong> <a href=\"https:\/\/ca.wikipedia.org\/wiki\/El_Prat_de_Llobregat\">Prat de Llobregat<\/a>,<a href=\"https:\/\/ca.wikipedia.org\/wiki\/Viladecans\"> Viladecans<\/a>, <a href=\"https:\/\/ca.wikipedia.org\/wiki\/Gav%C3%A0_Mar\">Gav\u00e0 Mar<\/a>, <a href=\"https:\/\/ca.wikipedia.org\/wiki\/Castelldefels\">Castelldefels<\/a> i fins a <a href=\"https:\/\/ca.wikipedia.org\/wiki\/Sitges\">Sitges<\/a>, hi trobem actualment dunes formades entre la zona del passeig mar\u00edtim i la zona on posem les tovalloles per poder prendre el sol durant l&#8217;estiu! <strong>Aquestes dunes tenen una import\u00e0ncia molt i molt gran<\/strong>: s\u00f3n vitals per a l&#8217;equilibri ecol\u00f2gic i la biodiversitat, afavoreixen la qualitat visual del paisatge, ajuden a la formaci\u00f3 de les llacunes deltaiques, tant importants per a la flora i la fauna, i s\u00f3n una reserva de sorra per a la pr\u00f2pia regeneraci\u00f3 de les platges. <strong>Sense dunes no tindr\u00edem les platges ni el paisatge que coneixem!<\/strong><\/p>\n<p>[\/et_pb_text][et_pb_text _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;20px||30px||false|false&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p style=\"text-align: center;\"><i class=\"fas fa-umbrella-beach\"><\/i><strong> Vols aprendre m\u00e9s sobre les dunes i la seva import\u00e0ncia?<\/strong><\/p>\n<p>[\/et_pb_text][et_pb_gallery gallery_ids=&#8221;9940,9945,9950,9955&#8243; show_title_and_caption=&#8221;off&#8221; show_pagination=&#8221;off&#8221; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_gallery][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_divider _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;50px||30px||false|false&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_divider][et_pb_image src=&#8221;https:\/\/albergueesplaibarcelona.com\/wp-content\/uploads\/2021\/02\/infografia_dunes_catala-1.jpg&#8221; title_text=&#8221;infografia_dunes_catala&#8221; align=&#8221;center&#8221; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_image][et_pb_text _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;30px||||false|false&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p>Com pots veure a la infografia que t&#8217;hem preparat, al sud de Barcelona tenim 17 km de dunes, una part molt important de tota la l\u00ednia de platges que trobem des del <strong>Delta del Llobregat<\/strong> fins al <a href=\"https:\/\/ca.wikipedia.org\/wiki\/Port_Ginesta\">Port Ginesta<\/a>, que forma part de <a href=\"https:\/\/ca.wikipedia.org\/wiki\/Sitges\">Sitges<\/a>.<\/p>\n<p>Per\u00f2, <strong>qu\u00e8 s\u00f3n exactament les dunes o el sistema dunar?<\/strong> Doncs b\u00e9, les dunes s\u00f3n acumulacions de sorra just al darrera de les platges amb una vegetaci\u00f3 i fauna caracter\u00edstiques i una gran import\u00e0ncia ecol\u00f2gica, paisatg\u00edstica i urban\u00edstica, ja que ajuden a frenar les inundacions quan hi ha marees extraordin\u00e0ries.\u00a0 La gran funci\u00f3 de les dunes com a barreres ve donada<strong> gr\u00e0cies als pendents que creen: d&#8217;aquesta manera poden oposar resist\u00e8ncia a les grans onades i a l&#8217;erosi\u00f3<\/strong>. Per aix\u00f2 s\u00f3n ecosistemes protegits que cal conservar.<\/p>\n<h3>QUINES PLANTES VIUEN A LES DUNES?<\/h3>\n<p>La vegetaci\u00f3 de les dunes \u00e9s molt caracter\u00edstica, moltes de les esp\u00e8cies que hi viuen s\u00f3n exclusives d&#8217;aquest tipus d&#8217;h\u00e0bitats, ja que han de ser<strong> plantes adaptades a la sal, a la sequera, el vent i l&#8217;impacte de les onades<\/strong>. Al llarg dels anys s&#8217;ha pogut observar que el <strong>borr\u00f3<\/strong> (<a href=\"https:\/\/ca.wikipedia.org\/wiki\/Borr%C3%B3\"><em>Ammophila arenaria<\/em><\/a>) \u00e9s la planta ideal per a les dunes, ja que gr\u00e0cies a les seves arrels t\u00e9 la capacitat d&#8217;agafar amb molta for\u00e7a la sorra que formen les dunes i evitar que es desplaci amb l&#8217;acci\u00f3 del vent i les onades. Sovint es considera una mala herba, per\u00f2 \u00e9s una planta essencial per a les dunes que d\u00f3na refugi a molts animals.<\/p>\n<p>Aquesta planta conviu molt b\u00e9 amb altres plantes pr\u00f2pies dels ecosistemes dunars i molt boniques com la <strong>campaneta de mar<\/strong> (<a href=\"https:\/\/ca.wikipedia.org\/wiki\/Campaneta_de_mar\"><i>Calystegia soldanella<\/i><\/a>), el <strong>lliri de mar<\/strong> (<a href=\"https:\/\/ca.wikipedia.org\/wiki\/Lliri_de_mar\"><em>Pancratium maritimum<\/em><\/a>) o la <strong>lleteresa de platja<\/strong> (<em><a href=\"https:\/\/ca.wikipedia.org\/wiki\/Lleteresa_de_platja\">Euphorbia paralias<\/a><\/em>) que tamb\u00e9 cal preservar i potenciar per poder mantenir les dunes en bones condicions ecol\u00f2giques i <strong>fer front a les esp\u00e8cies invasores<\/strong> com el b\u00e0lsam o ungla de gat (<a href=\"https:\/\/ca.wikipedia.org\/wiki\/Carpobrotus\"><em>Carpobrotus sp.<\/em><\/a>), l&#8217;atzavara (<a href=\"https:\/\/ca.wikipedia.org\/wiki\/Atzavara\"><em>Agave americana<\/em><\/a>) o l&#8217;ambr\u00f2sia (<a href=\"https:\/\/ca.wikipedia.org\/wiki\/Ambrosia_psilostachya\"><em>Ambrosia coronopifolia<\/em><\/a>).<\/p>\n<h3>QUINS ANIMALS VIUEN A LES DUNES?<\/h3>\n<p><strong>Pel que fa a la fauna<\/strong>, cal remarcar que les dunes s\u00f3n vitals per a algunes esp\u00e8cies, com el <strong>corriol camanegre<\/strong> (<a href=\"https:\/\/ca.wikipedia.org\/wiki\/Corriol_camanegre\"><i>Charadrius alexandrinus<\/i><\/a>), que no podrien nidificar si no hi hagu\u00e9s ecosistema dunar protegit: fan els nius a la sorra, entre les plantes dunars. Tamb\u00e9 \u00e9s un h\u00e0bitat important\u00edssim perqu\u00e8 les <strong>tortugues marines<\/strong>, especialment la tortuga babaua (<em><a href=\"https:\/\/ca.wikipedia.org\/wiki\/Tortuga_careta\">Caretta caretta<\/a><\/em>), hi puguin fer el niu. Per\u00f2 als sistemes dunars tamb\u00e9 hi trobem altres <strong>esp\u00e8cies d&#8217;ocells, r\u00e8ptils, mam\u00edfers o insectes molt caracter\u00edstics<\/strong>: la sargantana cendrosa (<a href=\"https:\/\/ca.wikipedia.org\/wiki\/Sargantana_corredora\"><em>Psammodromus hispanicus<\/em><\/a>), que viu i es reprodueix a les dunes, la papallona del lliri de mar o eruga zebra (<em><a href=\"https:\/\/ca.wikipedia.org\/wiki\/Eruga_zebra\">Britys crini<\/a><\/em>), l&#8217;eri\u00e7\u00f3, el conill silvestre i altres petits mam\u00edfers.<\/p>\n<p><strong>Totes aquestes esp\u00e8cies cal protegir-les de manera efica\u00e7<\/strong>, per aix\u00f2 alguns municipis com el Prat del Llobregat estan instal\u00b7lant tanques en palissada de fusta que no permeten el pas de persones i animals dom\u00e8stics que podrien alterar la vida d&#8217;aquestes esp\u00e8cies.<\/p>\n<p><a href=\"https:\/\/docs.amb.cat\/alfresco\/api\/-default-\/public\/alfresco\/versions\/1\/nodes\/9f57a88b-4811-4973-97a6-421fa4c7b54d\/content\/190313_A3_DUNES_TRA%C3%87AT.pdf?attachment=false&amp;mimeType=application\/pdf&amp;sizeInBytes=4513354\">&gt; Descobreix aqu\u00ed la fauna i la flora de les dunes en un p\u00f2ster de l&#8217;AMB<\/a><\/p>\n<p>[\/et_pb_text][et_pb_text _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;30px||||false|false&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h3>Per qu\u00e8 s\u00f3n importants les dunes dins el sistema de platges?<\/h3>\n<ul>\n<li><strong>Mantenen una biodiversitat pr\u00f2pia i original<\/strong>: podem trobar corriols camanegres, mascarells, gavines, sargantanes cendroses, escarabats piloters, papallones del lliri de mar, erugues i conills silvestres.<\/li>\n<li><strong>Mantenen una vegetaci\u00f3 clau per a la superviv\u00e8ncia de les esp\u00e8cies<\/strong> que hem mencionat anteriorment.<\/li>\n<li>Afavoreixen la <strong>formaci\u00f3 i el manteniment de les llacunes deltaiques<\/strong>, important\u00edssimes per a la fauna i la flora.<\/li>\n<li><b>S\u00f3n una reserva de sorra<\/b> per a la pr\u00f2pia regeneraci\u00f3 natural de les platges.<\/li>\n<li>Tenen la <strong>funci\u00f3 de barrera per a les grans onades<\/strong>. Si no hi ha sistema dunar i apareixen marees extraordin\u00e0ries, \u00e9s m\u00e9s que probable que la platja desaparegui i hi hagi inundacions i afectacions importants a les edificacions de primera l\u00ednia de costa. Ara mateix aquest factor \u00e9s<strong> m\u00e9s important que mai a causa del canvi clim\u00e0tic<\/strong>!<\/li>\n<\/ul>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_divider _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;50px||30px||false|false&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_divider][et_pb_text _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p>Ja has vist que la<strong> import\u00e0ncia social i ecol\u00f2gica<\/strong> de les dunes \u00e9s molt i molt gran! Per aquesta ra\u00f3, l&#8217;<a href=\"https:\/\/www.amb.cat\/s\/home.html\">AMB<\/a>, l&#8217;<a href=\"https:\/\/www.elprat.cat\/\">Ajuntament del Prat de Llobregat<\/a>, l&#8217;<a href=\"https:\/\/www.viladecans.cat\/ca\">Ajuntament de Viladecans<\/a>, l&#8217;<a href=\"https:\/\/www.gavaciutat.cat\/es\">Ajuntament de Gav\u00e0<\/a> i l&#8217;<a href=\"https:\/\/www.castelldefels.org\/es\/\">Ajuntament de Castelldefels<\/a> estan <strong>impulsant mesures per preservar aquest element<\/strong> de les platges de la zona del Delta del Llobregat: organitzen <strong>plantacions de borr\u00f3, extreuen les esp\u00e8cies invasores, fan neteja de pl\u00e0stics i altres residus, ajuden a la formaci\u00f3 de les dunes<\/strong> i col\u00b7loquen <strong>tanques de protecci\u00f3 i passarel\u00b7les<\/strong> per evitar que hi entrin les persones o els gossos.<\/p>\n<p>Des de Fundesplai tamb\u00e9 organitzem <strong>accions a les platges del Delta del Llobregat<\/strong>; des de <a href=\"https:\/\/escoles.fundesplai.org\/serveis\/sortides-d-un-dia\/educacio-ambiental\/\">sortides escolars<\/a>, visites guiades des de l&#8217;<a href=\"https:\/\/albergueesplaibarcelona.com\/ca\/\">Alberg Centre Esplai<\/a> i activitats familiars a les <a href=\"https:\/\/www.amb.cat\/web\/territori\/espai-public\/parcs\/punts-interes\/jugatecambiental\">Jugateques ambientals<\/a>, fins a tasques de voluntariat ambiental.<\/p>\n<p style=\"text-align: center;\"><strong>Volem un present i un futur on puguem gaudir d&#8217;aquestes platges magn\u00edfiques i els ecosistemes dunars, de tanta import\u00e0ncia social i ecol\u00f2gica. Ajuda&#8217;ns a conservar les dunes!<br \/><\/strong><\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Has visitat les platges m\u00e9s properes del Delta del Llobregat? Descobreix el sistema dunar i la seva import\u00e0ncia ecol\u00f2gica i social.<\/p>\n","protected":false},"author":6,"featured_media":9931,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[36,134],"tags":[],"class_list":["post-9928","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-espais-naturals","category-sostenibilitat-ca"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Qu\u00e8 \u00e9s el sistema dunar i per qu\u00e8 \u00e9s important? - Alberg Centre Esplai<\/title>\n<meta name=\"description\" content=\"Has visitat les platges m\u00e9s properes del Delta del Llobregat? 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